SQL injection vulnerability in manage_user_page.php in MantisBT before 1.2.19 and 1.3.x before 1.3.0-beta.2 allows remote administrators with FILE privileges to execute arbitrary SQL commands via the MANTIS_MANAGE_USERS_COOKIE cookie.
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.